Alternative of ComboBox.Items.Clear()

Question

2.00/5 (1 vote)

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What I want is to implement the following Code

C#

private void comboBox2_TextChanged(object sender, EventArgs e)
        {
            SendKeys.Send("{END}");
            comboBox2.Items.Clear();
            SqlConnection con = new SqlConnection();
            con.ConnectionString = Global.constr;
            con.Open();
            SqlCommand cmd = new SqlCommand("select itemCode from ItemDetails where  
                                            ItemCode like '" + comboBox2.Text + "%' 
                                            order by ItemCode", con);
            SqlDataReader dr = cmd.ExecuteReader();
            
            while (dr.Read())
            {
                comboBox2.Items.Add(dr[0].ToString());
            }
            dr.Close();
            con.Close();
            
        }

But the code is not working when I use the down arrow to choose an Item.
The comboBox2.Items.Clear(); code is clearing my Text Property also.
Searching is fine. But I can't choose the particular item from list. It is been cleared automatically.
Please help
Thanks in advance

Posted 26-Dec-11 9:13am

Sourav Sarkar-SS

Updated 26-Apr-17 5:20am

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Comments

Sergey Alexandrovich Kryukov 26-Dec-11 19:03pm

What do you want to achieve, exactly? What is "not working"? SendKeys is a dirty thing, not to be used to solve regular UI problems.
--SA

[no name] 27-Dec-11 5:22am

I don't have any problem regarding SendKey.
My problem is ComboBox.Items.clear();

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Monjurul Habib · Answer 1 · 2011-12-26T09:27:00

Try following:

C#

private void comboBox2_TextChanged(object sender, EventArgs e)
        {
            SendKeys.Send("{END}");
            //comboBox2.Items.Clear(); NOT HERE
            SqlConnection con = new SqlConnection();
            con.ConnectionString = Global.constr;
            con.Open();
            SqlCommand cmd = new SqlCommand("select itemCode from ItemDetails where  
                                            ItemCode like '" + comboBox2.Text + "%' 
                                            order by ItemCode", con);
            SqlDataReader dr = cmd.ExecuteReader();
            comboBox2.Items.Clear(); // HERE
            while (dr.Read())
            {
                comboBox2.Items.Add(dr[0].ToString());
            }
            dr.Close();
            con.Close();
            
        }